Nervous System
The Motor Division of the peripheral nervous system is broken into these two sub-divisions:
Somatic and autonomic
What is found in white matter?
Myelinated axons
What is resting membrane potential?
-70 mV
What does the central nervous system consist of?
Brain and spinal cord
Which types of receptors do both the olfactory and gustatory system use?
Chemoreceptors
The fight-or-flight system is called this.
Sympathetic nervous system
Which type of neuron are sensory neurons?
Unipolar
At threshold (-55 mV), what channels open up?
Sodium voltage-gated channels
What are bundles of axons in the PNS called?
Which type of papilla on the tongue contains no taste buds?
Filiform papillae
When digestion is turned back on, heart rate goes back to normal, airways constrict back to normal, etc, this describes this system.
Parasympathetic
In the CNS, which neuroglia wrap the axons in myelin?
Oligodendrocytes
After sodium rushes into the cell, at +30, Potassium voltage-gated channels open. Where does potassium move? (In or out of the cell)
Out of the cell
When an action potential skips over myelinated areas and conducts quickly, this is called:
Saltatory conduction
On which layer of the eye is vision projected onto?
The retina
The nervous system just for the GI tract is called this.
Enteric nervous system
Which cells function like astrocytes in the PNS?
Satellite cells
The process by which too much potassium leaves the cell and the cell goes below resting is called:
Hyperpolarization
Moving toward or away from the threshold potential is called a:
Graded potential
What is the mucous lining covering the sclera, and cornea of the eye?
Conjunctiva
Which system controls our voluntary effectors (skeletal muscle)?
Somatic
What is the area of a neuron called where the coma pinches in to the axon?
Axon hillock
During which refractory period are the potassium channels still open and sodium channels are closed?
Relative refractory period
In this type of summation, multiple pre-synaptic neurons are telling the post-synaptic neuron to fire at the same time:
Spatial summation
What is the nerve that sends information both about sound and equilibrium to the brain?
Vestibulocochlear nerve